At least 25 people died in Ukraine violence between protesters and security forces. (BBC)

Affordable Care Act volunteers are using Obama campaign tactics like “microtargeting” and data-driven door-to-door efforts to sign people up for health care. (NYT)

After a fracking explosion in Pennsylvania that likely killed one worker and started a five-day fire, Chevron showed its commitment to neighborliness by giving local residents a pizza voucher. (Philly.com)